Seiko Cal. 6637 - 444

The 6637-444 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6637 caliber with 30j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-ae330771fc30]

Also known as: Turtle, Crown

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

46mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1972

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